Vienna Acoustics Klimt Klimt Series Owner's Manual page 8

Following the positioning or toeing-in, attention needs to be turned to the
distance of the speakers with respect to the back and side walls of your listening
room. While it is possible to achieve positive results positioning the speakers
close to the rear wall, this position typically gives up some potential bass
extension as well as some soundstage depth. Ideally, the best starting place is
approximately one meter from the rear wall. This distance is also a